Island



MEGHANVISM FOR THE MANUFAGTURE 0F RUBBER SHOES.

N. PETERS, Pmwmnugnpnef, washiugnm D. t;

(No Model.) 2 sheets-sheet 2.

J. DOUGHTY.. MBGHANISM FOR THB MANUPAGTURB 0F RUBBER SHOES.

N0. 404,265. Patented May 28, 1889.

N. PETERS. Fhololjlhogmpber. Wnhinglnn. D. C.

UNITED STATES 'PATENT OFFICE.

HENRIT J. DOUGHTY, OF MALDEN, MASSACHUSETTS, ASSIGNOR TO JOSEPH .BANIGAN, OF PROVIDENCE, RHODE ISLAND.

IVIECHANISIVI FOR THE IVIANUFACTURE OF RUBBER SHOES.

SPECIFICATION forming part of Letters Patent No. 404,265, dated May 28, 1889. Application led September 5, 1887. Serial No. 248,822. (No model.)

To all whom it may concern: The connection between the steam-chests Re it known that I, HENRY J. DOUGHTY, of inclosing the stationary and movable molds Malden, county of Middlesex, and State of' is made, as herein shown, by or through ahol- Massachusetts, have invented an Improvelow hinge or joint. and connecting' steam- 5 ment in Mechanism for the Manufacture of ports. 55

Rubber Shoes, of whiclrthe following de- The stationary mold-it in practice receivscription, in connection with thc accompanying the rubber to form the top part of the ing drawings, is a specification, like letters shoe-has a slot or mortise, through which is on the drawings representing like parts. passed the spindle ot thclast or inside former,

ro' This invention has for its object to provide which gives shape to the inside ot the boot 6o an apparatus by which boots and shoes may or shoe, the other end of the said spindle bebe made in a novel manner 'from rubber or low the stationary mold being operatively other like plastic material, my invention as joined with last-actuating mechanism,whereherein embodied being especially applicable by the last may be pulled down into or lifted 15 for the production of shoes. Y l from the stationary mold. 65

In accordance with my invention I employ To shape the mouth of the shoe, and at the a compound metallic mold constructed, pretsame time provide the edge of the mouth with erably, in two parts, one part, which I shall a thickened or beaded edge, I have provided call the stationary mold, being fixed, while the stationary mold about the slot therein,

2o the other part, constituting the top of the through whichthe spindle of the last passes, 7o mold, is made movable, the said stationary with a groove or channel, into which the last and movable molds each co-operating with or in its descent forces a portion of the rubber having fixed with relation to them a steam laid into the stationary mold, and I have prochest or jacket, whereby the molds may be vided the last with a lip, which, after the 25 heated to the desired degree to effect the vulsaid channel has been filled with rubber, meets 75 canization of the rubber, the movable mold in its descent a shoulder of the stationary and its eo-operatiug steam chest or jacket bemold, the pressure between the lip and shouling so connected with the stationary mold and der being such as to sever p the material its co-operating steam chest or jacket as to smoothly to constitute the month of the shoe,

3o insure the retention of the heat entirely and at the same time remove any surplus 8o throughout the compound mold in both its material, thus giving final shape to the mouth closed and open positions. So, also, in acof the shoe. cordance with my invention the top of the The rubber or other plastic material to be stationary mold and its surrounding steamused for the upper part of the shoe is cut by 3 5 ch'est and the lower side or face of' the movdies or in other suitable manner from, pref- 85 able mold and its surrounding 'steam-chest erably, a sheet of rubber to constitute a are so shaped that what is to constitute a part blank, the said blank being laid into the of the shank and a part of the counterof the stationary mold, and thereafter the last or shoe about the heel is formed within the movinside former is drawn down into the station- 4o able mold, and the line of junction of the mateary mold upon the said material, and then a 9o rial laid within the stationary mold and of second sheet or layer of rubber or other the material laid upon the last when the-latmaterial to form the bottom or sole and a ter has been pulled downinto the stationary portion of the top is placed upon the top of mold will be practically in the line of the the last or inside former, and the movable 45 widest part of the shoe from the heel toward mold is brought down upon and so Yas to cover 95 its toe measured in the direc-tion of the width the said last when pressure is applied to the of the last, as will be described. movable mold, and the two parts ot the mold The steam-chest which receives the stationare held firmly together within the steamary mold will in practice be supported on an chests until the rubber or other material is 5o upright or standard. properly vulcanized together. roo

Aily invention in machines for manufacturing ruhher shoes emisists in certain t'eatu res whieh will he hereinafter pointed out in the speoilieation and inade the suhject of claim at the end thereof.

Figure 1 is a part ial section of an apparatus emhotlying my invention, the section heilig in the line .1',l1`ig. 2,1he mold heing (dosed and the material. in it heing in heavy hlaek line. Fig. il is a partial sectional elevation. ol.' the apparatus represented in Fig. l, viewingI the same from the right of the dotted line a1. Fig. S is a partial right-hand side elevation ol? the maehino shown in Fig. i, with the movahle mold elevated, the vulcanized shoe or loot-eovering heing' yet on the last. Fig. -lis a top or plan view ot' the Stationary mold renn'lved. Fig. it a seetional detail showing the eonstruetion ot' the jointhet\\'een the steam-chests Surrounding the stationary and inovahle molds; Fig. 5, a side elevation of; the statimlary mold detaehed and with the former or last therein in its lowest position; Fig. l, a detail ol the movahle mold; Fig. 7, a detail el.' the last or insid e lfornier and its con.- ;neeted spindle; and Fig. S is a eross-seotion oI the stationary mold and the last or inside Former therein in the line nl, Fig. 5, chielly to show the groove hy which to l'orln the head ahout the mouth of the shoe.

The upright or standard A, ot' any suitable shape, supports a casting, eored, at d', to :l'orin a steam chest or jacket, as o, into whieh steam or heated air or other heated medium may he admitted tlnfough a sllitahle pipe, as H53, eonneeteifl with any usual steam suluily, the said pipe having a eoek Aor valve, as (d.

Hee Figs. 2 and S.)

rl`he steam-chest o, as herein shown, has a eentral opening to receive the neek cri oit' and Support iirinly in position (see Fig. l) a ,istational-y mold, (1,",the latter heing oountersunk or eut away, as at a, (see Fig. -l-,) to contorni to the shape required lior the upper part ot' the shoe or 'i'oot-eovering, the said eountersink terminating in a shoulder, as o7, the said 'mold at the junetion oi its Sides with the slmulder heingprovided with a groove, as j), (see Fig. 8,) for the reception ot a Sufficient quantity Oil' ruhher or other material to constitute ahead, p', ahoutthemouth ot the shoe t to he made. (See ll`ig. 5i.)

rlhe Statiiimary mold of* is provided with a slot, as of, through whieh is extended the spindle u, of a last or inside forint-r, di", so that through the said Spindle the said last eonnected to and preferably integral with the spindle may he raised from or he lowered into the stationary mold d witl'lout retrieving the last from the immhine, asheretoiore done.

The last om, at or nearits junction with the spindle and about the spindle, is; out away, as shown liest Vin Fig. S, to leave a lip, p, to hit the shoulder (t7 and sever or separate the material hy pressure, as will he deserihed, The spindle n helow the stationary mold isoperzr 1ively eouneeied with hast-:telHating meehanA isnnlie'rein shown as composed oilVl a link, h, an arm or lever, h', an d a rock-shz'ifl t, as h2, to wl 1 ieh the said arm is connected, the said roek-shatI t having an attached lever, Ui, hy which it may he turned to raise or lower the spindle and last, as may he desired.

I do not desire to limit my invention to the particular devices herein shown i'oractuai ing` the last, as instead I may employ any other well-known or equivalent mechanism.

The steam-chest or Casting` d, as herein shown, has hinged to it a Steam-chest, r, pro vided with suitable slemu-passages, ei", to per mit the eireulation ol' steam through 1he said steanrchest to heat the movahle mold c2, seeured within it. The hinge employed `l'or connecting the steam-chests a and f: is hest Shown in Fig. .IYL.

lel'erriilg to Fig. It, the steam-ehest r/ has screwed yinto it at opposite sides a hollow trunnion, n, having a steam-port,n', and provided with a smooth portion, fn?, which reeeives upon it the perforated ear it" oi the steam-chest c, so that the steam-chest e turns freely about the said trunnion.

llaeh trunnion outside the iriortioi'l supporting the ear is provided with a (lange, as I11,1, hetween which and a washer, n, is placed a Steam-receiving ring, n, which hy a pipe, as nl, having an elhow, is eomim'ded with the Steam-passage c* in the movahle steam-chest ci". Each hollow trunnion fa is hored through Yfrom its outer Side, formingsuitahle ports, as 11S, to permit the steam to passlfronl theports o inv the ohamher n, through the opening 'ad into the hollow si cani-ring and Vinto tl steampassage ei.

.Having shown one 'l'orm ot steanrhinge, l desire it to he understood. that l do not in tend to limitI my invention to the shape o[ hollow hinge herein represented, asl may employ any other well-known. or equivalent eonnection.

The steam-ehestc receives and has seeured in it i'irinly in suitahle manner the movable mold ci, which is shaped oreountersunlc as host shown in Figs. l and (i, the shape oli the eountersink heing suf-,h as to give proper shape to the sole or hottom ol. the shoe, the said niovahle mold, as herein shown, heing shaped to form a heel integral with the sole.

The Steam-Chest e, as herein shrnrn, is provided with two cam ridges or surfaces, as e", over which is moved a roller, (A, having long journals (j, which are extended throl'lgh arms or links c, pivoted. loosely upon pivot-studs ll, lixed to the steam-ehest of or other .fixed part olf the l `1.'an1e, the said roller c' and link e lorm ing a pressing-trame. The journals o if the roll e outside thelgrame at eaeh end have Vfixed to them suitahle lntnd-wheels, as ai', hy whielrthe said roll el may he turned positively and he Inade to travel over the cam ridges or surlaees c in the direction of the arrow lo, ll`ig. '1,when the movahle mold and ehestsurrounding it are to he l'oreed down upon the stal ionary mold and its surrounding chest to IOO IOS

form and to vulcanize into shape the material held in the mold and inclosing the last or inside former. The steam-chest c has two arms, es, provided with a counterbalanciiig-weight, C9, to aid the operator in handling the movable mold and its surrounding steam-chest.

In operation the rubber or other plastic material in sheet form and of the desired thickness will be cut to form a blank of the size and shape suitable to fill the space in the stationary mold and constitute the chief part of the top of the shoe to be made, the said blank being iitted about the spindle of the last when in its elevated position, as in Fig. The material having been laid into the st-ationary mold, the operator turns the rockshaft b2 and draws the last or inside former down upon the material laid in the stationary mold, and then the operator lays another quantity of rubber or other material, which is to constitute the sole of the shoe and a small portion of the shoe immediately adjacent to the heel and shank thereof, and then, by means of the handle cl3, or otherwise, the operator turns the movable mold c2 and its surrounding steam-chest c down upon the stati onary mold and its surroundin g steam-chest, and thereafter the operator causes the roller c'l to be moved over the cam-surfaces c3, as in Fig. l, thereby forcing the movable mold down closely upon the rubber previously laid upon the sole-forming part of the last or former, and the said parts are held closely together for a sufficient length of time to properly vulcanize the material within the mold and surrounding` the last. In the descent of the last, as described, into the stationary mold the sides of the last cause the material laid in the stationary mold to enter the groove p and form a bead or thickened portion, p', and the lip p3 of the last, hitting the shoulder of the stationary mold by pressure, causes the material to be severed cleanly, leaving a smooth mouth finished by the bead. Vhen the material has been properly vulcanized to complete the shoe, the steam-chest c and movable mold are lifted, uncovering the last or inside former,which is then raised from the stationary mold into the position Fig. 3, when the operator removes the shoe S from the last, leaving the latter, however, suspended above the stationary mold ready to be again depressed when the stationary mold has received a new stock of material. The steam or other heating medium, after its circulation through the steam channels or spaces in the steam-chests a and c, is exhausted through a pipe, as d', controllcd by a suitable cock, as dit.

It is obvious that the direction of the steam channels or spaces in the steam-jackets may be variously changed without departing from my invention, and so also, instead of the 'particular devices shown by which to positively force the movable mold down upon the material surrounding the last in the stationar f mold, I may employ any -other well-known equivalent mcchanisin.

Referring to Fig. 5 it will be seen that the top of the stationary mold a4 and its surrounding steam-chest and the lower side or face of the movable mold and its surrounding steam-chest are so shaped that what is to constitute part of the shank and part of the counter of the shoe above the heel is formed within the movable mold, the line of junction of the material laid within the stationary mold and of the material laid upon the last or inside former when pulled down into the stationary mold, as described, being shown by the dotted line S, Fig. 3, so that the line of union or junction of the material employed in the shoe is practicallyin the line of the widest part of the shoe from toe to heel or throughout the entire length of the shoe.

The stationary and movable molds may be readily removed from the steam-chests surrounding them, and molds of other size and shape be substituted.

Dividing the mold as shown and described, so as to join the material constituting the top and bottom parts of the shoe together at the widest part of the shoe throughout from toe to heel, enables the shoe to be made seamless and the vulcanized shoe to be readily withdrawn from the mold.

The top of the stationary mold next the last or inside former is provided with a lip, as 10, and the under side of the movable mold c2 has a corresponding lip, 12, which meet as the movable mold is forced down into position to vulcanize the material surrounding the last or inside former, the said lips removing the surplus material forming part of the two layers applied to the stationary mold and the last, as stated, being a line of junction at S.

The shoe herein described forms the subject matter of an application, Serial No. 248,821, filed September 5, 1887.

I claiml. In an apparatus for forming boots and shoes from rubber or equivalent plastic material, the mold a* and surrounding steamchest and the mold c2 and its surrounding steam-chest, combined with the last and its spindle extended through and adapted to reciprocate in one of the molds, one of the said molds being made movable with relation to the other, to operate substantially as described.

2. The mold a4, its surrounding steamchest, the mold c2, shaped to aid in the formation of the sole and heel and also a partof the upper of the shoe about the heel, and the steam-chest surrounding the said mold c2 and the metallic last, combined with steam-connecting devices, substantially as described, between the said steam-chest a4 and c2, whereby steam may be admitted into both when the said molds are opened and closed, to operate substantially as described.

3. In a machine for the manufacture of shoes from india-rubber compound, a metallic last, its co-operatiu g two-part molds u." c2, di-

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vided longitudinaliy at aI point beiwreen the line olf the Mitteln of the last and the iop olf the last l'or a portion oit' the length of the said moldsl where the last is ei' greatest thickness in longitudinal eross-seetion, and the stealinchestssurrmnu'liugl the said molds, to operate substainiially as and l'or the purposes set l'orth.

l. The mold o, provided with a shoulder, eombined with the last or inside former provided with a lip to eo-i'yperate with the said shouhler to form the mouth of the shoe, Subslantiallvv as described.

5. The mold (t, having' a shoulder and `groove at or near the Said shoulder, eonibined with the last or inside 'i'ormer havingr a` lip, whereby the mouth of the shoe Vis provided with a bead andis trimmed smoothly, substantially as deseribed.

(i. In an apparatus for the mauulaeture of boots and shoes from rubber or other plastie material, a mold, or', to receive the material to t'orlu the ehiel part of the top of the shoe, and a metalli@` last having' a shank, as deseribed, to enter and slide vertieally within the said mold, eombined with a mold, rf?, to

Ali'oree the rubberor equh'alent material upon the sole-form i n portion of the last h eld w i th iu the mold o, the junction o1' the two molds being' substantially in line of the widest part of the shoe throughout Yfrom toe to heel, slibstantially as described.

7. In au apparatus :for lforming' boots and shoes from rubber or equivalent plastie material, a iuold,(lr1, its surrounding stmim-ehest, and a mold, (-2, and ay steam-chest lla'yingeamsurlfaees and surrcnuuling the said mold, eombined with a messing-frame to travel over the said cam-surfaces and foi-ee the two molds in eontaet, substantially as described.

S. The mold ft1,its surrounding steam-chest, the pivoted mold r2, and its surroundi n steamehest, Combined with a eounterbalaneng wfjeight for the said mold e2 and steaiwehest e, substantially as described.

In testimony whereol;I I. have signed my name to this specifica-tion in the presenee o two subscribing witnesses.

lVlnesses:

(l. W. (-nucooiw, (l. M. ("oNifl. 

